Railway-carriage-lighting system.



A. ULBRICH.

RAILWAY CARRIAGE LIGHTING SYSTEM.

APPLICATION FILED JUNE 4. 1914.

1,150,465. I Patented Aug. 17, 1915.

AUGUST ULBRICH, OF CHARLOTTENBURG, GERMANY, ASSIGNOR TO JULIUS PINTSCH AKTIENGESELLSCHAFT, OF BERLIN, GERMANY.

RAILWAY-CARBIAG-E-LIGHTING SYSTEM.

Specification "bf Letters Patent.

Patented Aug. 17, 1915.

' To all whom it may concern a Be it known that I, AUGUST ULBRroH, a citizen of the German Empire, and resident of Charlottenburg, German Empire, have invented a new and useful ImprovedRailway-(JarriageLighting System, of which the following is a full, clear, and exact de scription.

In systems or plants for illuminating rallway carriages, it is necessary to provide means for adjusting the lamp to dark in each or any individual compartment as also for effecting the adjustment of all the lamps through theattendant at the end of the car,

.without the necessity of his entering each compartment. This object is attained by means of the present invention, in accordance with which one feed pipe is provided for the reduced flame or dark adjustment, while a second pipe is provided for a the full gas feed or light adjustment. A cock is provided at the end of the carriage by means of which the main feed can be cut of? by the attendant, so that all the lamps will be supplied from the feed conduit for the reduced flames, i. 6., the flames will all be adjusted to dark.

In order to meet the various requirements incidental to railway carriage lighting, means must be provided in each compartment to secure a continuous gas or fuel feed to the lamp, even at the moment of turning the cock on or 0H. Means must also be provided for quickly blowing the air out of the pipes, when the plant starts working. Furthermore reliable working of the system must be insured, however many lamps are connected up to the gasholder, and however many may be entirely out out, or burning dark or burning with the full flame.

The first requirement may be met either a by temporarily connecting the two feed pipes to the lamp, or by providing a gas storage space inthe lamp, which contains suflicient fuel to keep the flame burning even when the adjustment takes place slowly.

The second requirement is met by means i of a suitably constructed cook or valve in communication with both feed pipes by 11; is necessary to substitute means of which both conduits may be temporarily supplied with gas at normal pressure or even at a pressure above the normal in order to blow through the conduits and remove any air there may be in the same. The third condition is fulfilled by employmg a pressure throttling device, which insures a constant pressure at the outlet side of the regulator, although the consumption of gas may vary within certain limits. Thus pressure regulators for throttling screws, both for the main and for the reduced pressure feed pipes. The present invention consists substantially in a suitable arrangement of a pressure regulating device of the class above referred to, in combination with suitable means for changing the direction of the current of gas as desired.

To attain the object in view, the low pressure or igniting feed pipe is provided with a pressure regulator for the reduced pressure and a device is mounted in the main pipe for controlllng the dlrectlon or" the gas passage.

The pressure regulator for the low pressure might be connected up to the gasholder direct but is advantageously connected to the outlet side of the high pressure regula tor, which latter is in direct communication a with the gas holder, so that the outlet pressure of the main regulator, will form the initial pressure controlled by the low pressure regulator.

At the adjusting cock the two conduits (high and low pressure) are connected to each other by means of a short connecting pipe.

The arrangement and location of the parts according to the present invention enables sure above the normal previously referred to for blowing out purposes.

In the accompanying drawings Figure 1 is a diagrammatic representation of the arrangement of pipes and lamps, and Figs. 2 and 8 are detail views showing different posit-ions of the distributing cook or valve.

a is the gasholder, b the main pressure regulator, Z) the low pressure regulator, e

the main pressure feed pipe to the lamps, f

the low pressure feed pipe. I

d is the distributing cook or valve mounted in the main pressure, o is the'connecting pipe extending from this cock to the low pressure pipe f. i i" and i are the lamps e f, e, 7" and 6' f the branch pipes from the main and low pressure pipes to each lamp respectively.

0 0 are the cut off cocks for both feed conduits at the end of the carriage.

The upper row of lamps g 9 may be corridor lamps or the like requiring no individual adjustment.

The gas passes from the holder a through the main pressure regulator b and the shut off cocks 0 to the parallelly arranged feed conductors e f. In the high pressure feed pipe 6 the distributing three way cock cl is mounted, which may be adjusted to three ositions. When in the position shown in Fig. 1 with the stop cocks a open, gas passes under normal pressure through the feed pipe 6 to the lamps, the connecting pipe 0 between pipes e and f being closed. In this position of the parts any one in the compartment may adjust the compartment lamp to light or dark at will by shifting the gas feed from pipe 6 to f or vice versa. If the distributing cock is adjusted to the position illustrated in Fig. 2 the direct communication between the main regulator b and the low pressure pipe f is interrupted, so that low pressure gas only will pass to the lamps through both feed conduits and all lamps will burn dark.

If the position of the distributing cock is adjusted to that shown in Fig. 3, both feed pipes e and f will be in communication with the high pressure regulator and pressure above the normal will be available for blowing out.

I am aware that many systems closely resembling the present one are known and do not, therefore, make a broad claim to a system involving main lights and pilot flames.

I claim as my invention 1. In a gas lighting plant for railway carriages having a gasholder and high and low pressure pipes to each lamp, the combination of a high pressure regulator for the high pressure main and a low pressure regulator for the low pressure feed pipe, a distributing means mounted in the high pressure conduit and pipe connection from the same to the low pressure conduit, said distributing device and pipes being adapted to direct the high and low pressure to supply high pressure gas to both conduits, to supply high pressure gas to the main conduit and low pressure gas to the low pressure conduit and to supply low pressure gas to both conduits substantially as described.

2. In a gas lighting plant for railway carriages having a gasholder and high and low pressure pipes to each lamp, the combination of a high pressure regulator for the high pressure main and a low pressure regulator for the low pressure feed pipe, athree-way distributing cock mounted in the high pressure conduit and pipe connection from the same to the low pressure conduit, said threeway cock having a'pipe connection to the gas main between the two regulators, said cock being provided with through-ways to open the main high pressure pipe and cut oil the low pressure conduit, to cut oflt' the main and establish communication between the low and high pressure feeds above the main cut off and to open up the main feed and simultaneously establish communication between the main and low pressure pipes.

3. In a gas lighting plant for railway carriages having a gasholder and high and low pressure pipes to each lamp, the combina tion of a high pressure regulator for the high pressuremain and low pressure regulator for the low pressure feed pipe, a pipe connection from the inlet'end of the latter to the outlet end of the former, a distributing organ mounted in the high pressure conduit and pipe connection from the same to the low pressure conduit, said distributing device and pipes being adapted to direct the high and low pressure to supply high pressure gas to. both conduits, to supply high pressure gas to the main conduit and low pressure gas to thelow pressure conduit and to supply low pressure gas to both conduits substantially as described.

4. In a gas lighting system, the combination of a high pressure pipe; a low pressure pipe; a. plurality of lamps each adapted to be fed by both'of said pipes; and a distributing means communicating with both pipes for at will directing high or low pressure gas to one or both pipes.

5. In a gas lighting system, the combination of a high pressure pipe; alow pressure pipe; a plurality oflamps each fed by both of said pipes; a pipe connection communicating with said low pressure pipe; and a. distributing means communicating with the said connection and high pressure pipe for at will directing high or low pressure gas to one or both pipes.

6. In a gaslighting system, the combination of a high pressure pipe; a low pressure pipe; a gas holder; a pressure regulator connected between the gas holder and the high pressure pipe; a pressure regulator connected between the high pressure pipe In testimony whereof I afiiX my signature and the low pressure pipe; a plurality of in the presence of tWo Witnesses.

lamps each adapted to be fed by both of said pipes; and a distributing means be- AUGUST ULBhICH' tween the regulators and the lamps for at Witnesses: Will directing high or low pressure gas to HENRY HAsrER, one or both pipes. WOLDEMAR HAUPT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

